/* --- Global Styles & Variables --- */
  :root {
    --primary-color: #00b074;      /* Trading Green */
    --secondary-color: #1e293b;    /* Slate Dark */
    --bg-canvas: #f8fafc;          /* Light Background */
    --bg-card: #ffffff;            /* White Content Base */
    --text-main: #334155;          /* Muted Dark Body Text */
    --accent-warn: #f59e0b;        /* Alert Amber */
    --border-light: #e2e8f0;       /* Fine Separators */
    --max-width: 900px;
  }

  * {
    box-sizing: border-box;
  }

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-canvas);
    color: var(--text-main);
  }

  /* Main Document Container */
  .page-wrap {
    max-width: 100%;
    margin: 0 auto;
    padding: 20px 14px 30px;
    line-height: 1.8;
  }

  /* --- Typography --- */
  h1, h2, h3, h4 {
    color: var(--secondary-color);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.3;
  }

  h1 { font-size: 2.5rem; margin-top: 10px; }
  h2 { font-size: 1.8rem; margin-top: 2.5rem; padding-bottom: 8px; border-bottom: 2px solid var(--border-light); }
  h2 span { color: var(--primary-color); }
  h3 { font-size: 1.4rem; margin-top: 1.5rem; }
  h4 { font-size: 1.15rem; margin-top: 1rem; }
  p { margin-bottom: 1.5rem; font-size: 1.05rem; }
  strong { color: var(--secondary-color); }

  hr {
    border: 0;
    height: 1px;
    background: var(--border-light);
    margin: 40px 0;
  }

  a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
  }
  a:hover { text-decoration: underline; color: #00875a; }

  /* --- Sections & Structural Components --- */
  .hero-section { margin-bottom: 2rem; }
  
  .badge {
    display: inline-block;
    background: #f0fdf4;
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
  }

  .toc-list {
    background: var(--bg-canvas);
    padding: 25px 25px 25px 40px;
    border-radius: 8px;
    border: 1px solid var(--border-light);
    margin: 2rem 0;
  }
  .toc-list li { margin-bottom: 8px; font-size: 1.05rem; }

  .mastery-topics {
    background-color: var(--bg-canvas);
    padding: 15px 20px;
    border-radius: 6px;
    border-left: 3px solid var(--primary-color);
    margin: 20px 0;
    font-size: 1rem;
  }

  /* Callouts & Message Info-Boxes */
  .callout-box {
    display: flex;
    background-color: #f0fdf4;
    border-left: 4px solid var(--primary-color);
    padding: 20px;
    border-radius: 0 8px 8px 0;
    margin: 25px 0;
    gap: 15px;
  }
  .callout-box.warning {
    background-color: #fffbeb;
    border-left-color: var(--accent-warn);
  }
  .callout-icon { font-size: 1.5rem; line-height: 1.2; }
  .callout-content h3 { margin-top: 0; font-size: 1.2rem; }
  .callout-content p { margin-bottom: 0; font-size: 1rem; }

  /* Strategy Grid Section */
  .strategy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin: 25px 0;
  }
  .strategy-card {
    background: var(--bg-canvas);
    padding: 24px;
    border-radius: 8px;
    border: 1px solid var(--border-light);
  }
  .strategy-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748b;
    font-weight: 600;
    margin-bottom: 5px;
  }

  /* Data Tables Setup */
  .table-container {
    overflow-x: auto;
    margin: 25px 0;
    border: 1px solid var(--border-light);
    border-radius: 8px;
  }
  table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
    text-align: left;
  }
  th, td { padding: 14px 16px; border-bottom: 1px solid var(--border-light); }
  th { background-color: var(--bg-canvas); color: var(--secondary-color); font-weight: 600; }
  tr:last-child td { border-bottom: none; }
  tr:hover { background-color: #f8fafc; }

  /* Framework Execution Steps */
  .steps-wrapper { margin: 25px 0; }
  .step-block { display: flex; gap: 20px; margin-bottom: 25px; }
  .step-number {
    background: var(--secondary-color);
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
  }
  .step-content h3 { margin-top: 0; font-size: 1.2rem; }

  /* Bullet Lists & Reference Boxes */
  /*ul { margin: 20px 0 20px 25px; }*/
  /*ul li { margin-bottom: 10px; font-size: 1.05rem; }*/

  .example-card {
    background: var(--bg-canvas);
    padding: 25px;
    border-radius: 8px;
    border: 1px solid var(--border-light);
    margin: 25px 0;
  }
  .info-row { display: flex; gap: 10px; margin-bottom: 8px; align-items: flex-start; }
  .info-row div:first-child { color: var(--primary-color); font-weight: bold; }

  /* Call To Action Banner */
  .cta-banner {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #0f172a 100%);
    color: #ffffff;
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    margin: 40px 0;
  }
  .cta-banner h3 { color: #ffffff; font-size: 1.8rem; margin-bottom: 10px; }
  .cta-banner p { color: #94a3b8; margin-bottom: 25px; font-size: 1.1rem; }
  .cta-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #ffffff;
    padding: 14px 30px;
    border-radius: 6px;
    font-weight: 600;
    transition: background-color 0.2s;
  }
  .cta-btn:hover { background-color: #00875a; text-decoration: none; color: #fff; }

  /* --- FAQ System Styles --- */
  .faq-section { margin-top: 40px; }
  .faq-item { border: 1px solid var(--border-light); border-radius: 8px; margin-bottom: 12px; overflow: hidden; }
  .faq-q {
    width: 100%; background: var(--bg-card); border: none; padding: 18px 20px;
    text-align: left; font-size: 1.1rem; font-weight: 600; color: var(--secondary-color);
    cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  }
  .faq-q:hover { background-color: var(--bg-canvas); }
  .faq-q em { font-style: normal; color: var(--primary-color); font-size: 1.3rem; transition: transform 0.2s; }
  .faq-a {
    max-height: 0; padding: 0 20px; overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease; background-color: #fff;
    color: var(--text-main); font-size: 1.05rem; line-height: 1.6;
  }
  
  /* Class driven toggles managed via JavaScript */
  .faq-item.active .faq-a {
    padding: 15px 20px 20px 20px; max-height: 1000px; border-top: 1px solid var(--border-light);
  }
  .faq-item.active .faq-q em { transform: rotate(45deg); color: #ef4444; }

  /* --- Mobile Optimization --- */
  @media (max-width: 768px) {
    body { padding: 10px; }
    .page-wrap { padding: 20px; margin: 10px auto; }
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    .step-block { flex-direction: column; gap: 10px; }
    .step-number { width: 32px; height: 32px; font-size: 0.9rem; }
  }